Integrated capacitor shield for balun in MRI receivers
First Claim
Patent Images
1. A magnetic resonance imaging (MRI) system comprising:
- at least one magnet configured to generate a magnetic field;
at least one gradient coil manipulating the magnetic field generated by the at least one magnet by way of a gradient field;
at least one receiver coil, receiving electromagnetic signals from the manipulated magnetic field;
at least one balun connected to the receiver coil in order to condition the received electromagnetic signals; and
wherein the at least one balun includes a balun shield having a capacitance and a common mode inductance that creates a parallel resonant circuit.
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Abstract
A balun is included in a magnetic resonance imaging system. The balun conditions electromagnetic signals received from at least one RF receiver coil. The balun includes a balun shield having an integrated capacitor therein. The balun blocks unwanted feedback from effecting performance of any components contained within the balun shield.
25 Citations
27 Claims
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1. A magnetic resonance imaging (MRI) system comprising:
- at least one magnet configured to generate a magnetic field;
at least one gradient coil manipulating the magnetic field generated by the at least one magnet by way of a gradient field; at least one receiver coil, receiving electromagnetic signals from the manipulated magnetic field; at least one balun connected to the receiver coil in order to condition the received electromagnetic signals; and wherein the at least one balun includes a balun shield having a capacitance and a common mode inductance that creates a parallel resonant circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- at least one magnet configured to generate a magnetic field;
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15. A balun module compatible with a magnetic resonance imaging system comprising:
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a common mode inductor disposed adjacent to a shield having an end plate thereon; and a two conductor parallel plate capacitor integrated into the end plate. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A method of assembling a balun module which is compatible with MRI, the method comprising:
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enclosing a common-mode inductor within a balun shield;
attaching an end plate to the balun shield; andintegrating a parallel plate capacitor into the balun shield, the parallel plate capacitor having a non-magnetic inner conductor and outer conductor on a dielectric substrate. - View Dependent Claims (23, 24, 25, 26, 27)
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Specification